I am planning on recompiling postfix and all its various helper apps
(switching from cyrus to dovecot, upgrading mysql, Maybe setting up
LDAP, and doing a clean install of FreeBSD latest) onto a newer, and
hopefully more capable machine.
What I want to do is get the new system built and configured and
tested and then swap it in to replace the old machine.
My question is what is the best way to actually migrate the mail and
the users to the new machine without losing mail? WOuld it be a good
idea (or even possible) to run the two machines in parallel for a
time, having all new mail go to both of them so I can then remove the
old machine once I see that everything is working?
The last time I did a migration to a new machine 1) someone else was
in charge 2) we moved the hard drive so we didn't have to move users/
mail 3) we were offline for an entire weekend.
--
And, while it was regarded as pretty good evidence of criminality
to be living in a slum, for some reason owning a whole street
of them merely got you invited to the very best social
occasions.
